Levi ii



(No Model.)

L. H. THOMAS.

LAMP.

No. 403,400. Patented May 14, 1889.

UNITED STATES PATENT OFFICE.

LEVI H. THOMAS, OF CHICAGO, ILLINOIS.

LAM P.

SPECIFICATION forming part of Letters Patent No. 403,400, dated May 14, 1889.

Application filed January 19, 1889- Serial No. 296,823. (No model.)

To all whom it may concern.-

Be it known that I, LEVI H. THOMAS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Lamps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

U y invention relates to an improvement in lamps, the object being to provide an article of this character which shall be simple and economical in construction, and at the same time adapted to all the purposes for which such articles are employed; and the invention consists in a lamp bowl, body, or fount made of paper, paper-board, or analogous material, and composed of a hollow paper cylinder, the ends of which are closed by solid and stiff paper or paper-board disks, the top disk being provided with a metallic collar for the attachment of the burner, and the bottom disk being grooved for the reception of the end of the paper cylinder and extended to serve as a base to support the lamp-body, all substantially as will be hereinafter more fully described and then claimed.

In the accompanying drawings, illustrating my invention, Figure 1 is a side elevation of my improved paper lamp complete. Fig. 2 is a vertical section of the lamp body or fount. Fig. 3 is:a similar section of a slightly-modified form of the lamp-body. Fig. 4 is a top plan View of the disk which forms the base of the lamp, and shows the groove in the same. Fig. 5 is an inverted plan view of the paper disk forming the head of the lamp-body. Fig. 6 is a detail view of the crimped edge of the collar.

Like letters of reference designate corresponding parts in all the different views.

The body or bowl of the lamp is preferably cylindrical in form, and consists of a paper cylinder formed by winding or rolling a sheet or strip of paper upon itself until of sufficient thickness to adapt it for the purpose for which it is intended. The cylinder will therefore be of any desired length and diameter and consequent capacity. The hollow paper cylinder thus formed has its ends closed by solid paper disks.

B denotes the bottom disk. It is of sufficient thickness to form a good solid and firm base. It is provided with a circular groove at 1), formed therein by means of a hollow cutter, to receive the lower end of the paper wall of the cylindrical body'A. Said disk 13 is extended beyond the cylinder A and made enough larger in diameter than the diameter of said cylinder to enable it to serve as abase to support the lamp-body.

C denotes the top disk, which closes the top of cylinder A. It likewise is of sufiicient thickness to make a firm solid head, and is provided with a groove, 0, cut circularly therein, to receive the upper end of the cylindrical body A.

In Fig. 3 I have shown a slight modification in the construction of my lamp-body, the

change from what is shown in Fig. 2 being in the head C, which, instead of being grooved like head 0 to contain the upper end of the paper cylinder A, is made equal in diameter to cylinder A, so as to fit nicely within the upper end of the cylinder. This form of the invention, in preference to that of Fig. 2,'m'ay often be used. I

The edges of the upper disk, C, and lower disk, 13, are nicely rounded, as shown in the drawings, by smoothing them on an emerywheel. Thus the edges, besides being improved in appearan ce, are burnished and hardened at the points where they are most eX- posed.

D denotes the metallic collar for the attachment of the lamp-burner. It is secured to head C, which has a circular central opening to contain it. The collar has an inturned screw-threaded flange, d, and is formed with a shoulder, e, adapted to rest upon the upper surface of the head, and with a shoulder, f, on its lower edge, that presses into the head near its under side, said shoulder being crimped to enable it to grasp the paper material of the head more firmly.

By the construction just detailed I produce a distinctly new article of manufacture and one of great utilityto wit, a paper lamp. Paper as a material out of which to construct the lamp -body I have found to be much superior to any other, especially to wood, which has heretofore sometimes been employed. Wood is more expensive than paper,

and for this reason paper is better. Wood is liable to warp and shrink and swell during changes of temperature, while paper retains a positive permanent shape and is not alfected in these respects. Paper is lighter than wood and much stronger, for thin wooden parts like the disks, body, &c., which I use would be liable to be easily broken or chipped off. This cannot occur with paper; so I esteem it a great improvement in the art to use paper as the material for making the thin parts.

In order to prevent the oil from permeating the paper of which the lamp is constructed, I apply to the interior surface of the bowl a coating of suitable composition, preferably composed of nine parts of glue and one of glycerine, or nine parts of glue and one of sugar. This coating is preferably applied after the bowl has been completed, in order that it may extend over the inner surface of the bottom and head of the same, as well as its sides, and also that it may enter and completely and effectually fill up and seal the different joints to prevent leakage. Other compositions may be employed; but I have found by actual and practical tests, consisting in the constant use of such lamps for a number of months, that a coating formed of the above ingredients is in every way effectual and satisfactory.

In order to prevent any oil which may happen to find its way to the outside of the bowl from penetrating the paper walls of the body, I cover such surface with japan or suitable varnish, or first attach an ornamental envelope of paper to the body and afterward apply a coating of transparent varnish or japan, upon which oil will have no effect.

Having thus described my invention, what I claim as new, and desire to secure by LettersPatent, is

1. As a new article of manufacture, the

herein-described body, bowl, or fount, con-- sisting in the combination, with a paper cylinder, of a paper head and a paper bottom grooved to receive the end of the cylinder ceive the ends of the cylinder, and the bottom disk being extended to serve as a supporting.

base for the lamp-body, substantially as de scribed.

3. In a lamp, the combination of the cylindrical body formed of paper rolled upon itself, a solid paper head, a solid paper bottom, said head and bottom being grooved to receive the ends of the paper cylinder, and said bottom being extended to serve as a supporting-base for the lamp-body, and a metallic collar secured to the paper head for the attachment of the burner, substantially as described.

4. In a paper lamp, the combination, with the solid paper head of the lamp-body, of the metallic collar D, for the attachment of the burner, having an inturned screwthreaded flange, d, a shoulder, 6, adapted to rest on the upper surface of the head, and with a crimped shoulder, f, on its lower edge, that presses into and grasps the paper material of the head, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

LEVI H. THOMAS.

Witnesses:

S. HERBERT GIEsY, FRED E. TASKER. 

